/* Basic example code for MAX7219 LED dot matrix display with Arduino. More info: https://www.makerguides.com */

// Include the required Arduino libraries:
#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#include <OneWire.h>
#include <DallasTemperature.h>

// Define hardware type, size, and output pins:
#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 4
#define CS_PIN 3
#define CLK_PIN    13 // CLK or SCK
#define DATA_PIN   11 // DATA or MOSI

// Set temp sensor pin:
// Define to which pin of the Arduino the 1-Wire bus is connected:
#define ONE_WIRE_BUS 2

// Create a new instance of the oneWire class to communicate with any OneWire device:
OneWire oneWire(ONE_WIRE_BUS);
// Pass the oneWire reference to DallasTemperature library:
DallasTemperature sensors(&oneWire);

// Create a new instance of the MD_Parola class with hardware SPI connection:
MD_Parola myDisplay = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

void setup() {
  // Begin serial communication at a baud rate of 9600:
  Serial.begin(9600);
  // Start up the library:
  sensors.begin();


  // Setup for software SPI:
  // #define DATAPIN 2
  // #define CLK_PIN 4
  // MD_Parola myDisplay = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

  // Intialize the object:
  myDisplay.begin();
  // Set the intensity (brightness) of the display (0-15):
  myDisplay.setIntensity(0);
  // Clear the display:
  myDisplay.displayClear();

  //myDisplay.displayText("Hello", PA_CENTER, 100, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);
  //if (myDisplay.displayAnimate()) {
  //  myDisplay.displayReset();
  //}
}

  unsigned long startMillis;
  unsigned long currentMillis;
  unsigned long elapsedMillis;

  bool first_run = true;


void loop() {

  // Send the command for all devices on the bus to perform a temperature conversion:
  sensors.requestTemperatures();
  // Fetch the temperature in degrees Celsius for device index:
  float t = sensors.getTempCByIndex(0); // the index 0 refers to the first device
  // Fetch the temperature in degrees Fahrenheit for device index:
  
  // Check if any reads failed and exit early (to try again):
  if (isnan(t)) {
    Serial.println("Failed to read from temp sensor!");
    return;
  }
  
  int cele_cislo = t;
  int zvysok = (t - cele_cislo) * 10;

  String celsius = "C";
  String bodka = ".";
  String degree = "\xB0";
  String teplota = cele_cislo + bodka + zvysok + degree + celsius;

  int minuta = 0;
  int sekunda = 0;


//stopwatch part

if (first_run == true){
    
    //boot message
  
    
    myDisplay.setTextAlignment(PA_CENTER);
    myDisplay.print("boot");
    delay(1000);
    myDisplay.print(".boot.");
    delay(1000);
    myDisplay.print("..boot..");
    delay(1000);
    myDisplay.displayClear();

    myDisplay.displayText("OTUZOVATOR model 3000", PA_CENTER, 50, 0, PA_SCROLL_LEFT, PA_SCROLL_LEFT);    
    while (myDisplay.displayAnimate() == false){
    }
    
    //start stopwatch
    startMillis = millis();
    first_run = false;
    
    }
    else {
      
    int i = 0;
    
    do {
    currentMillis = millis();
    elapsedMillis = (currentMillis - startMillis);
    
    Serial.print("elapsedMillis: ");
    Serial.print(elapsedMillis);
    Serial.println("");
 
    unsigned long durMS = (elapsedMillis%1000);       //Milliseconds
    unsigned long durSS = (elapsedMillis/1000)%60;    //Seconds
    unsigned long durMM = (elapsedMillis/(60000))%60; //Minutes
    unsigned long durHH = (elapsedMillis/(3600000));  //Hours
    durHH = durHH % 24; 
    
    Serial.print("Time: ");
    Serial.print(durHH);
    Serial.print(" : ");
    Serial.print(durMM);
    Serial.print(" : ");
    Serial.print(durSS);
    Serial.print(" : ");
    Serial.print(durMS);
    Serial.println("");
    
    String durMilliSec = timeMillis(durMM, durSS);
    myDisplay.setTextAlignment(PA_CENTER);
    myDisplay.print(durMilliSec);
    
    Serial.println("******************************");
    Serial.println("");
  
    delay(100);
    
    i++;
    } while (i <= 50);
    
//OUTPUT  
  Serial.println(teplota);
  
  Serial.print("Temperature: ");
  Serial.print(t);
  Serial.print(" \xC2\xB0");
  Serial.print("C | ");


  myDisplay.setTextAlignment(PA_CENTER);
  myDisplay.print(teplota);
  delay(2000);
  }
}

String timeMillis(unsigned long Mintime,unsigned long Sectime)
{
  String dataTemp = "";

  
  if (Mintime < 10)
  {
    dataTemp = dataTemp + "0" + String(Mintime)+ ":";
  }
  else{
    dataTemp = dataTemp + String(Mintime)+ ":";
  }
  
  if (Sectime < 10)
  {
    dataTemp = dataTemp + "0" + String(Sectime);
  }
  else{
    dataTemp = dataTemp + String(Sectime);
  }
  

  Serial.print("String Time: ");
  Serial.println(dataTemp);
  
  return dataTemp;
}